DOCSLIB.ORG

Cooling Systems Compressor Cooler Unit RFCS-BL -

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Cooling Systems Compressor Cooler Unit RFCS-BL - ... 1. DESCRIPTION 1.1. GENERAL The compressor cooler units in the standard range BL are available in 6 sizes for cooling capacities of approx. 1 kW to 11.2 kW. The compact compressor cooler units are suitable for connection to one or several cooling circuits. The coolant can either be a water glycol mixture or, as an alternative, a low viscosity oil. The coolant is kept at a constant feed flow temperature which can be pre-set. The integral circulating pump supplies the cooling circuit from a generously sized tank. The units are wired ready-for- installation. 1.2. SYSTEM DIAGRAM 2. SPECIFICATIONS The compressor cooler unit consists of two circuits, the 2.1. COOLING CAPACITY refrigeration circuit and the cooling circuit. The main The cooling capacity of compressor cooler units is components of the refrigeration circuit are: dependent on the ambient temperature and the pre-set Compressor temperature of the coolant in the feed flow. In the graph Condenser the cooling capacities are shown as curves against Safety and regulating devices temperature of the coolant in the feed flow for the relevant size of compressor cooler unit. These cooling Evaporator (component shared by refrigeration circuit capacity curves apply to an ambient temperature (air and cooling circuit) temperature) of 32 °C. The main components of the cooling circuit are: For higher temperatures, the cooling capacity is Tank with coolant reduced by approx. 2% per 1K increase in temperature. Pump Selection graph RFCS - at 32°C ambient temperature 12 BL-092 Refrigeration circuit Condenser 11 (11.2kW)* 10 BL-075 Cooling circuit (9.5kW)* 9 Safety and BL-058 8 regulating device (8.1kW)* 7 Compressor BL-040 6 (5.7kW)* 5 BL-030 (4.9kW)* 4 Pump Evaporator 3 Cooling capacity [kW] BL 015 2 (2.2kW)* 1 Coolant 0 10 12 14 16 18 20 22 24 26 Temperature of the coolant (feed flow) [°C] * (cooling capacity at 32 °C ambient temperature and 25 °C feed flow temperature) 1.3. PRODUCT FEATURES 2.2. REFRIGERANT The compressor cooler unit consists of: R134a (not harmful to ozone) is used as the standard A closed-loop refrigeration circuit with hermetic refrigerant. compressor 2.3. TEMPERATURE CONTROL RANGE Air-cooled condenser protected by a guard The temperature of the coolant in the feed flow can be Plate heat exchanger as the evaporator pre-set to between 10 °C and 25 °C, according to customer requirements. For temperatures below the Low noise axial cooling fan ambient temperature and with correspondingly high Precise temperature control of the coolant by means of humidity, be aware that condensation ("sweat") can micro-processor-controlled technology form on components carrying the coolant and which Switching, controlling and safety devices have not been insulated. Large tank As an alternative to a fixed pre-set coolant temperature, Pump for water glycol mixture or, as an alternative, for there is also the possibility of using an ambient oil as the coolant. temperature-based control (as an option). 2.4. SWITCHING DIFFERENCE 1.4. AREAS OF APPLICATION The standard setting of the switching difference (hysteresis) is ±2K. This setting guarantees that the Machine tools temperature fluctuation in the feed flow on the one Machining centres hand, and the switching frequency of the compressor on Plastic injection moulding machines the other, is not too great. A smaller switching Presses difference can only be achieved up to a maximum switching frequency of 10 switching operations per hour. Electrical components As an option, it is also possible to use a continuous operation control with a switching difference of ±0.3 K. Please note that the control itself has an additional control tolerance of ±0.2 K. 2 2.5. SWITCHING FREQUENCY Standard allocation of the pump for water/glycol The maximum permissible switching frequency of the mixture: compressor is 10 switching operations per hour. If this Size Pump type Flow rate [l/min] limit is exceeded, the life expectancy is considerably 50 Hz 60 Hz 50 Hz 60 Hz reduced (see point 2.4.). RFCS-BL-015 202 202 2.6. COOLANT RFCS-BL-030 203 202 Either a water/glycol mixture with a max. glycol content of 25% (preferably Antifrogen N), or mineral oil to DIN RFCS-BL-040 203 202 51524 Part 1 and 2 can be used (attention must be paid RFCS-BL-058 204 203 50 Hz 60 Hz to low viscosity due to pressure drops in the system, RFCS-BL-075 204 203 especially in the plate heat exchanger). See pump curve See pump curve RFCS-BL-092 204 203 Other coolants on request. Permissible contamination: no abrasive or long-fibred The choice of coolant affects the sizing and model of particles, max. quantity of solid particles in suspension the pump, the sizing of the compressor and possibly the 10 mg/l cooling capacity. 2.7.2 Mineral oil 2.7. PUMP FOR COOLANT Type of pump: fixed-delivery vane pump One must differentiate between the coolants water/ Max. viscosity: 150 cSt glycol and oil. Permiss. contamination: = NAS 12 In both cases, standard pumps are specified according Internal pressure relief: 6 bar to the size of the cooling unit. Smaller or larger pumps can also be selected in each case as an alternative. Standard allocation of the pumps for mineral oil: 2.7.1 Water/glycol mixture Size/ Pump type Flow rate[l/min] Type of pump: multi-stage centrifugal pump cooler unit 50 Hz 60 Hz 50 Hz 60 Hz RFCS-BL-015 MFZP-1/1.1/P/71/7/ 10 12 RFCS-BL-030 MFZP-1/1.1/P/71/10/ 14.3 17.1 RFCS-BL-040 MFZP-1/1.1/P/71/10/ 14.3 17.1 Pump curves RFCS-BL-058 MFZP-2/2.1/P/80/20/ 28.5 34.2 Water or water/glycol RFCS-BL-075 MFZP-2/2.1/P/80/20/ 28.5 34.2 50 Hz RFCS-BL-092 MFZP-2/2.1/P/90/30/ 43 51 2.8. AMBIENT CONDITIONS Ambient temperature: min. 10 °C, max. 42 °C The performance data is based on 32°C. Pump Between 32 °C and 42 °C, a reduction in performance of 2% of the nominal performance per 1K increase in temperature must be expected. 2.9. INSTALLATION POSITION; MOUNTING The unit must be installed in a vertical position. Pump pressure [bar] It is important to ensure there is free flow of air to the condenser. The minimum distance between the filter guard and a wall must be 0.5 m. It is equally important that the air expelled from the top cannot reach the inlet side. A sensible minimum distance would be 1.0 to 1.5 m from a partition or cover, for example, depending on the size of the unit. Flow rate [l/min] 2.10. AIR INLET AND OUTLET 60 Hz The air inlet is via a filter guard on the back of the unit; the air outlet is on the top of the unit. 2.11. FILTER GUARD ON THE AIR INLET Contamination of the condenser leads to reduced heat dissipation, an increase of the condenser temperature and finally to shut-down of the unit. For this reason it is important that the condenser is protected on the air inlet side by using a filter guard against contamination. Depending on the type of contamination in the Pumpe surrounding area, either an air filter with a replaceable filter mesh (for dry dust, for example) can be used, or a metal filter (for oily contamination) which can be Pump pressure [bar] cleaned. Flow rate [l/min] 3 2.12. DIMENSIONS; WEIGHTS, TANK VOLUME 3. GENERAL INFORMATION Size Dimensions [mm] Weight Tank volume 3.1. SYSTEM CURVE FOR WATER / GLYCOL MIXTURE Width Depth Height [kg] [Litres] For water and water/glycol mixtures, there is turbulent B T H (empty) flow with the normal system components and at normal RFCS-BL-015 465 445 805 65 15 flow speeds. If the centrifugal pump pumps the coolant RFCS-BL-030 655 600 1088 145 52 through a system, an operating point occurs, i.e. a specific flow rate is produced at a definite back- RFCS-BL-040 655 600 1092 150 52 pressure from the pump. RFCS-BL-058 655 640 1315 180 70 If, in the same system, a higher flow rate is to be RFCS-BL-075 750 800 1695 225 100 circulated in order, for example, to increase the cooling RFCS-BL-092 750 800 1695 240 150 capacity, then the required pressure the pump must produce can be calculated using the following formula: p =p x (Q /Q )² 2.13. ELECTRICAL SPECIFICATIONS 2 1 2 1 p = new pressure to be calculated 2 Standard model p = existing pump pressure 1 Q = new flow rate Size Voltage Frequency No. of 2 Q = existing flow rate phases 1 RFCS-BL-015 230 V 50 Hz 1 Ph As can be seen from the formula, the required pump RFCS-BL-015 230 V 60 Hz 1 Ph pressure increases quadratically in relation to the flow rate. RFCS-BL-030 - 092 400 V 50 Hz 3 Ph That means, for example, that if the flow rate has to be RFCS-BL-030 - 092 460 V 60 Hz 3 Ph doubled, then four times the pump pressure is required. 3.2. SYSTEM CURVE FOR OIL AS THE COOLANT Special models In contrast to water, or water/glycol mixtures, for Size Voltage Frequency No. of viscous fluids such as oil, there is no turbulent flow in phases the cooling circuit, but instead laminar flow predominates.
Recommended publications
  • Refrigerator Type Water Cooler USER MANUAL

    Refrigerator Type Water Cooler USER MANUAL

    Refrigerator type water cooler Model A1213364VB USER MANUAL When using electrical appliances, basic safety precautions should be followed in order to reduce the risk of fire, electric shock and injury to persons or property. This manual contains important information describing how to safely set up, use and maintain your water cooler with fridge. SAVE THIS MANUAL FOR FUTURE USE PN 5M009123X1 © 2012 ELECTROTEMP TECHNOLOGIES IN PN 5M007983X1 V0 © 2011 ELECTROTEMP TECHNOLOGIES IN C. C. Model:A1213364VB Page 2 PRODUCT FEATURES 1 This water cooler can provide you Hot, Cold, room-temperature water and a fridge for food storage 2 Fast cooling and heating systems can provide you 80-92C hot water and 3-10C cold water with hot water capacity 4L/H and Cold water peak capacity 4L/H. The bottom fridge can chill beer, beverage, store food or make ice cubes. 3 Unique patented safety designs: Child-safety hot tap button, no-leak bottle receptacle and double safety hot tank Child safety hot tap button No-leak bottle receptacle Bottom fridge IMPORTANT: Do NOT Return Dispenser To Store. If you have a question or problem, please contact 855-VIVA-111 for assistance. Model:A1213364VB Page 3 SAFETY PRECAUTIONS T o reduce risk of injury and property damage, user must read this entire manual before assembling, installing & operating dispenser. Failure to execute the instructions in this manual can cause personal injury or property damage. This product dispenses water at very high temperatures. Failure to use properly can cause personal injury. When operating this dispenser, always exercise basic safety precautions, including the following: • Prior to use, this dispenser must be properly assembled and installed in accordance with this manual.
  • Dodge Cummins Coolant Bypass

    Dodge Cummins Coolant Bypass

    FPE-2018-06 SUBJECT: DODGE CUMMINS COOLANT BYPASS KIT November, 2020 Page 1 of 6 FITMENT: 2003–2007 Dodge Cummins Manual Transmission Only 2007.5-2018 Dodge Cummins Manual and Automatic Transmissions KIT P/N: FPE-CLNTBYPS-CUMMINS-MAN, FPE-CLNTBYPS-CUMMINS-6.7 ESTIMATED INSTALLATION TIME: 2-3 Hours TOOLS REQUIRED: 16mm ratcheting wrench, 10mm socket, 8mm socket, 6mm Allen, 1” wrench, hammer, 5-gallon clean drain pan, 36” pry bar, Scotch-Brite TM pad (included in kit). KIT CONTENTS: Item Description Qty 1 Coolant bypass hose 1 2 Coolant bypass thermostat housing 1 and O-ring 3 Thermostat riser block and O-ring 1 3 4 4 Coolant bypass hose riser bracket 2 2 5 M8 x 1.25, 20mm socket head cap 2 screw 7 6 6 M6 x 1.00 x 60mm flange head bolt 3 5 7 M12 x 1.75, 40mm flange head bolt 2 8 Scotch-Brite TM pad (not pictured) 1 1 WARNINGS: • Use of this product may void or nullify the vehicle’s factory warranty. • User assumes sole responsibility for the safe & proper use of the vehicle at all times. • The purchaser and end user releases, indemnifies, discharges, and holds harmless Fleece Performance Engineering, Inc. from any and all claims, damages, causes of action, injuries, or expenses resulting from or relating to the use or installation of this product that is in violation of the terms and conditions on this page, the product disclaimer, and/or the product installation instructions. Fleece Performance Engineering, Inc. will not be liable for any direct, indirect, consequential, exemplary, punitive, statutory, or incidental damages or fines cause by the use or installation of this product.
  • Optimization of the Design of a Polymer Flat Plate Solar Collector A

    Optimization of the Design of a Polymer Flat Plate Solar Collector A

    Optimization of the design of a polymer flat plate solar collector A. C. Mintsa Do Ango, Marc Médale, Chérifa Abid To cite this version: A. C. Mintsa Do Ango, Marc Médale, Chérifa Abid. Optimization of the design of a polymer flat plate solar collector. Solar Energy, Elsevier, 2013, 87, pp.64-75. 10.1016/j.solener.2012.10.006. hal- 01459491 HAL Id: hal-01459491 https://hal.archives-ouvertes.fr/hal-01459491 Submitted on 15 Mar 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Optimization of the design of a polymer flat plate solar collector A.C. Mintsa Do Ango ⇑, M. Medale, C. Abid Aix-Marseille Universite´, CNRS, IUSTI UMR 7343, 13453 Marseille, France This work presents numerical simulations aimed at optimizing the design of polymer flat plate solar collectors. Solar collectors’ absorbers are usually made of copper or aluminum and, although they offer good performance, they are consequently expensive. In com-parison, using polymer can improve solar collectors economic competitiveness. In this paper, we propose a numerical study of a new design for a solar collector to assess the influence of the design parameters (air gap thickness, collector’s length) and of the operating conditions (mass flow rate, incident solar radiation, inlet temperature) on efficiency.
  • COOLANT CATALOG We Are Committed to Keeping Trucks on the Road and Moving Forward by Providing Quality Parts to All Who Repair Heavy-Duty Vehicles

    COOLANT CATALOG We Are Committed to Keeping Trucks on the Road and Moving Forward by Providing Quality Parts to All Who Repair Heavy-Duty Vehicles

    COOLANT CATALOG We are committed to keeping trucks on the road and moving forward by providing quality parts to all who repair heavy-duty vehicles. CONFIDENCE. COVERAGE. COMMITMENT. TABLE OF CONTENTS EXTENDED LIFE COOLANTS . 4 CONVENTIONAL COOLANTS . 6 Parts that keep you moving. Quality that keeps you coming back. EXTENDED LIFE COOLANTS ROAD CHOICE® NOAT EXTENDED LIFE ANTIFREEZE & COOLANT Road Choice NOAT Extended Life Antifreeze & Coolant is formulated for heavy-duty diesel, gasoline and natural gas engine cooling systems . Road Choice NOAT Antifreeze & Coolant uses nitrite with organic additive inhibitors to provide long-term wet sleeve liner cavitation and corrosion protection for 750,000 miles of on-road or 15,000 hours of off-road use . PRODUCT HIGHLIGHTS: • Eliminates the need for SCAs and chemically charged filters • Improves heat transfer capability • Offers outstanding protection against corrosion and cavitation • Nonabrasive formula can improve water pump seal life • Eliminates drop-out and gel, and reduces scale • Provides exceptional long-term elastomer compatibility • Can be mixed with other coolants (to maintain corrosion protection, contamination levels should be kept below 25 percent) MEETS OR EXCEEDS THE NOAT EXTENDED LIFE FOLLOWING SPECIFICATIONS: ASTM D3306 ASTM D6210 TMC RP329 ASTM D4340 TMC RP351 (COLOR) RECOMMENDED FOR USE IN HEAVY-DUTY VEHICLES AND STATIONARY EQUIPMENT, REGARDLESS OF FUEL TYPE, INCLUDING: Caterpillar EC-1 Komatsu Cummins CES 14603 International John Deere H24A1, H24C1 GM Navistar Waukesha PACCAR
  • Initial Start-Up When Starting up the Cooler Refrigeration System for the First Time, the Following Events Occur

    Initial Start-Up When Starting up the Cooler Refrigeration System for the First Time, the Following Events Occur

    SEQUENCE OF OPERATION COOLERS AND FREEZERS COOLERS All standard units are equipped with an adjustable thermostat located on the lower right hand side of the evaporator coil, on the inside of the walk-in. All units are set at the factory to the temperature requested by the customer. Minor adjustments in operating temperature may be made to suit your needs by a qualified refrigeration technician. Polar King recommends that you do not set the temperature colder than required, as this will cause unnecessary power consumption. Recommended temperature for a cooler ranges from +34° to +37° F, unless specified otherwise for special applications. Refrigeration - Initial Start-Up When starting up the cooler refrigeration system for the first time, the following events occur. The operating sequence is as follows: (1) Thermostat calls for refrigerant. (2) Liquid line solenoid valve opens, allowing refrigerant to flow. (3) Pressure control makes the control circuit and the condensing unit operates. (4) When the room thermostat is satisfied, the liquid line solenoid will close, and the compressor will pump down and turn off. (Fan on unit cooler will continue to run.) These units are designed for application conditions 33°F and above. CAUTION: DO NOT SET A COOLER BELOW 32°F OR DAMAGE MAY OCCUR. Defrost Defrost is accomplished during refrigeration off cycle. Four defrost cycles per day are programmed at the factory (4 a.m., 10 a.m., 4 p.m., and 10:00 p.m.). It may be necessary to change the defrost cycle times to fit your work schedule. The interior temperature may rise slightly during the defrost cycle.
  • Environmental and Safety Considerations for Solar Heating and Cooling Applications

    Environmental and Safety Considerations for Solar Heating and Cooling Applications

    IMBSIR 78-1532 Environmental and Safety Con- siderations for Solar Heating and Cooling Applications David Waksman John Holton Solar Criteria and Standards Program Building Economics and Regulatory Technology Division Center for Building Technology National Engineering Laboratory National Bureau of Standards Washington, D.C. 20234 September 1978 Prepared for Department of Energy Office of Conservation and Solar Applications Washington, D.C. and Department of Housing and Urban Development Division of Energy, Building Technology and Standards Washington, D.C. 20410 "OC — 1 100 . U56 tf78-1532 / m faWeffa! Sireal of Stansf&ri* MAY 1 4 1979 NBSIR 78-1532 * »r ENVIRONMENTAL AND SAFETY CON- SIDERATIONS FOR SOLAR HEATING AND COOLING APPLICATIONS David Waksman John Holton Solar Criteria and Standards Program Building Economics and Regulatory Technology Division Center for Building Technology National Engineering Laboratory National Bureau of Standards Washington, D.C. 20234 September 1978 Prepared for Department of Energy Office of Conservation and Solar Applications Washington, D.C. and Department of Housing and Urban Development Division of Energy, Building Technology and Standards Washington, D.C. 20410 ; ; . a.c,: u j\, i \ : V. - - ( X id'..' U.S. DEPARTMENT OF COMMERCE, Juanita M. Kreps, Secretary Dr. Sidney Harman, Under Secretary Jordan J. Baruch, Assistant Secretary for Science and Technology NATIONAL BUREAU OF STANDARDS, Ernest Ambler, Director TABLE OF CONTENTS Page 1. INTRODUCTION 1 2. GENERAL PROVISIONS 1 3. FIRE SAFETY PROVISIONS . 2 3.1 FLAMMABLE MATERIALS 2 3.2 FIRE RESISTANCE OF BUILDING ASSEMBLIES 6 3.3 EMERGENCY ACCESS AND EGRESS 7 A. PROTECTION OF AIR AND POTABLE WATER 8 A. 1 PROTECTION OF POTABLE WATER 9 A.
  • 2224840 Engine Coolant Thermostat Housing Replacement (LUW)

    2224840 Engine Coolant Thermostat Housing Replacement (LUW)

    Service Information 2012 Chevrolet Cruze | Document ID: 2224840 Engine Coolant Thermostat Housing Replacement (LUW) Removal Procedure Caution: Refer to Engine Coolant Thermostat Housing Caution . 1. Open the hood. 2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . 3. Place a drain pan below the vehicle. 4. Drain the cooling system. Refer to Cooling System Draining and Filling . 5. Loosen the radiator inlet hose clamp (2). 6. Remove the radiator inlet hose (3) from the engine coolant thermostat (1). 7. Remove the throttle body heater inlet hose (2) from the engine coolant thermostat (1). 8. Remove the heater outlet hose from the engine coolant thermostat housing. Refer to Heater Outlet Hose Replacement . 9. Remove the heater inlet hose from the engine coolant thermostat housing. Refer to Heater Inlet Hose Replacement . 10. Remove the thermostat housing bracket nut. 11. Remove the thermostat housing bracket. 12. Disconnect the engine coolant temperature sensor connector (1). 13. Remove the 2 engine oil cooler pipe bolts (6). Note: Pull the engine oil cooler pipe out of the engine oil cooler. 14. Remove the engine oil cooler pipe (5). 15. Remove the engine oil cooler pipe seals (4, 7). 16. Remove the 4 engine coolant thermostat housing bolts (3). 17. Remove the thermostat housing (2). 18. Remove the thermostat housing seal (8). Installation Procedure 1. Clean sealing surface. 2. Install a NEW engine coolant thermostat housing seal (8). 3. Install the engine coolant thermostat housing (2). Caution: Refer to Fastener Caution . Note: Partially install the 4 bolts until the engine coolant thermostat housing is in contact with the cylinder head.
  • Heat and Thermodynamics Course

    Heat and Thermodynamics Course

    Heat and Thermodynamics Introduction Definitions ! Internal energy ! Kinetic and potential energy ! Joules ! Enthalpy and specific enthalpy ! H= U + p x V ! Reference to the triple point ! Engineering unit ! ∆H is the work done in a process ! J, J/kg More Definitions ! Work ! Standard definition W = f x d ! In a gas W = p x ∆V ! Heat ! At one time considered a unique form of energy ! Changes in heat are the same as changes in enthalpy Yet more definitions ! Temperature ! Measure of the heat in a body ! Heat flows from high to low temperature ! SI unit Kelvin ! Entropy and Specific Entropy ! Perhaps the strangest physics concept ! Notes define it as energy loss ! Symbol S ! Units kJ/K, kJ/(kg•k) ! Entropy increases mean less work can be done by the system Sensible and Latent Heat ! Heat transfers change kinetic or potential energy or both ! Temperature is a measure of kinetic energy ! Sensible heat changes kinetic (and maybe potential energy) ! Latent heat changes only the potential energy. Sensible Heat Q = m⋅c ⋅(t f − ti ) ! Q is positive for transfers in ! c is the specific heat capacity ! c has units kJ/(kg•C) Latent Heat Q = m⋅lv Q = m⋅lm ! Heat to cause a change of state (melting or vaporization) ! Temperature is constant Enthalpy Changes Q = m⋅∆h ! Enthalpy changes take into account both latent and sensible heat changes Thermodynamic Properties of H2O Temperature °C Sensible heat Latent heat Saturation temp 100°C Saturated Saturated liquid steam Superheated Steam Wet steam Subcooled liquid Specific enthalpy Pressure Effects Laws of Thermodynamics ! First Law ! Energy is conserved ! Second Law ! It is impossible to convert all of the heat supplied to a heat engine into work ! Heat will not naturally flow from cold to hot ! Disorder increases Heat Transfer Radiation Conduction • • A 4 Q = k ⋅ ⋅∆T QαA⋅T l A T2 T1 l More Heat Transfer Convection Condensation Latent heat transfer Mass Flow • from vapor Q = h⋅ A⋅∆T Dalton’s Law If we have more than one gas in a container the pressure is the sum of the pressures associated with an individual gas.
  • 03-IDW-Gcg26c Manual-220V.Pdf

    03-IDW-Gcg26c Manual-220V.Pdf

    GCG-26c UPRIGHT COOLER G-Series Cooler Manual is for the following models: GCG-26-C14N7 GCG-26-C14NG GCG-26-C14NI GCG-26-C14NM GCG-26-C14NJ GCG-26 G-26-C14N7 G-26-C14NG G-26-C14NI G-26-C14NM G-26-C14NJ G-26 Instruction Manual GCG-26c FOR YOUR FUTURE REFERENCE • This easy-to-use manual will guide you in getting the best use of your cooler. • Remember to record the model number and the serial number. This information can be found on the inside of your cooler. • Keep your receipt with this manual for future warranty service. Model #: Manual is for the following models: Serial #: GCG-26-C14N7 TABLE OF CONTENTS Date of Purchase: GCG-26-C14NG Parts & Identification ..........................................................3 GCG-26-C14NI Safety Precautions ..............................................................4 GCG-26-C14NM Features ..............................................................................5 GCG-26-C14NJ Instructions .........................................................................5 GCG-26 Ambient Environment ..........................................................5 Preparation Before Operation ..............................................6 G-26-C14N7 Replacing the Interior Light .................................................7 G-26-C14NG Replacing the Door LED Lights .............................................8 G-26-C14NI Replacing the Canopy Light .................................................9 G-26-C14NM Startup, Operation & Temperature Adjustment ...................10 Lit Door ‘Logo’ Switch .......................................................
  • Indoor Air Quality Assessment

    Indoor Air Quality Assessment

    INDOOR AIR QUALITY ASSESSMENT Barnstable United Elementary School 730 Osterville W. Barnstable Road Marstons Mills, Massachusetts Prepared by: Massachusetts Department of Public Health Bureau of Environmental Health Indoor Air Quality Program October 2019 BACKGROUND Building: Barnstable United Elementary School (BUES) formally the Horace Mann Charter School Address: 730 Osterville W. Barnstable Road Marstons Mills, Massachusetts Assessment Requested by: Barnstable Board of Health coordinated via Barnstable Public Schools (BPS) Reason for Request: Mold concerns prompted this recent request; however, over the past year the MDPH has been involved with a collaborative effort to perform general indoor air quality (IAQ) assessments throughout the Barnstable School District. Date of Assessment: September 12 and September 17, 2019 Massachusetts Department of Public Mike Feeney, Director and Cory Health/Bureau of Environmental Health Holmes, Environmental Analyst, (MDPH/BEH) Staff Conducting Assessment: MDPH/IAQ Program Building Description: The BUES is a two-story brick building completed in 1994. The building contains a centralized courtyard, general classrooms, science classrooms, art rooms, music rooms, kitchen, cafeteria, gymnasium, faculty workrooms and office space. Windows: Openable METHODS Please refer to the IAQ Manual and appendices for methods, sampling procedures, and interpretation of results (MDPH, 2015). Note that this building has been visited by the MDPH IAQ Program in June 2012 at the request of the BPS. The report from that visit can be found at: https://www.mass.gov/info-details/indoor-air-quality-reports-cities-and-towns-b (listed as Horace Mann). It is also important to note that the BPS has reportedly created IAQ committees in their school buildings, each with an IAQ liaison/teacher representative that conducts regular walk-throughs to identify on-going and/or potential environmental issues.
  • CKM Vacuum Veto System Vacuum Pumping System

    CKM Vacuum Veto System Vacuum Pumping System

    CKM Vacuum Veto System Vacuum Pumping System Technical Memorandum CKM-80 Del Allspach PPD/Mechanical/Process Systems March 2003 Fermilab Batavia, IL, USA TABLE OF CONTENTS 1.0 Introduction 3 2.0 VVS Outgassing Distribution 3 3.0 VVS High Vacuum Pumping System Solutions 4 3.1 Diffusion Pump System for the VVS 3.2 Turbo Molecular Pump System for the VVS 3.3 Turbo Molecular Pump System for the DMS Region 3.4 VVS Cryogenic Vacuum Pumping System 4.0 Roughing System 6 5.0 Summary 6 6.0 References 7 p. 2 1.0 Introduction This technical memorandum discusses two solutions for achieving the pressure specification of 1.0E-6 Torr for the CKM Vacuum Veto System (VVS). The first solution includes the use of Diffusion Pumps (DP’s) for the volume upstream of the Downstream Magnetic Spectrometer (DMS) regions. The second solution uses Turbo Molecular Pumps (TMP’s) for the upstream volume. In each solution, TMP’s are used for each of the four DMS regions. Cryogenic Vacuum Pumping is also considered to supplement the upstream portion of the VVS. The capacity of the Roughing System is reviewed as well. The distribution of the system outgassing is first examined. 2.0 VVS Outgassing Distribution There are several sources of outgassing in the VVS vacuum vessel. These sources are discussed in a previous note [1]. The distribution of the outgassing within the VVS is now considered. The VVS detector total outgassing rate was determined to be 1.0E-2 Torr-L/sec. The upstream portion accounts for 54% of this rate while the downstream side is 46% of the rate.
  • Experimental Convection Heat Transfer Analysis of a Nano-Enhanced Industrial Coolant

    Experimental Convection Heat Transfer Analysis of a Nano-Enhanced Industrial Coolant

    nanomaterials Article Experimental Convection Heat Transfer Analysis of a Nano-Enhanced Industrial Coolant Eva Álvarez-Regueiro 1,2, Javier P. Vallejo 1,2 , José Fernández-Seara 2, Josefa Fernández 3 and Luis Lugo 1,* 1 Departamento de Física Aplicada, Facultade de Ciencias, Universidade de Vigo, E-36310 Vigo, Spain; [email protected] (E.Á.-R.); [email protected] (J.P.V.) 2 Área de Máquinas e Motores Térmicos, Escola de Enxeñería Industrial, Universidade de Vigo, E-36310 Vigo, Spain; [email protected] 3 Grupo NaFoMat, Laboratorio de Propiedades Termofísicas, Departamento de Física Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain; [email protected] * Correspondence: [email protected]; Tel.: +34-986-813-771 Received: 14 January 2019; Accepted: 12 February 2019; Published: 15 February 2019 Abstract: Convection heat transfer coefficients and pressure drops of four functionalized graphene nanoplatelet nanofluids based on the commercial coolant Havoline® XLC Pre-mixed 50/50 were experimentally determined to assess its thermal performance. The potential heat transfer enhancement produced by nanofluids could play an important role in increasing the efficiency of cooling systems. Particularly in wind power, the increasing size of the wind turbines, up to 10 MW nowadays, requires sophisticated liquid cooling systems to keep the nominal temperature conditions and protect the components from temperature degradation and hazardous environment in off-shore wind parks. The effect of nanoadditive loading, temperature and Reynolds number in convection heat transfer coefficients and pressure drops is discussed. A dimensionless analysis of the results is carried out and empirical correlations for the Nusselt number and Darcy friction factor are proposed.